The Jacobi Polynomials QCD analysis for the polarized structure function

Details The Jacobi Polynomials QCD analysis for the polarized structure function The Jacobi Polynomials QCD analysis for the polarized structure function

2007-05-18

arxiv.org/abs/0705.2647v2

JHEP 0707:048,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 8 figures and 4 tables

Scientific paper

10.1088/1126-6708/2007/07/048

We present the results of our QCD analysis for polarized quark distribution and structure function $xg_1 (x,Q^2)$. We use very recently experimental data to parameterize our model. New parameterizations are derived for the quark and gluon distributions for the kinematic range $x \epsilon [10^{-8},1]$, $Q^2 \epsilon [1,10^6]$ GeV^2. The analysis is based on the Jacobi polynomials expansion of the polarized structure functions. Our calculations for polarized parton distribution functions based on the Jacobi polynomials method are in good agreement with the other theoretical models. The values of $\Lambda_{QCD}$ and $\alpha_s(M_z)$ are determined.

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